As of 2008[update], the active ingredients—green tea leaf extract (provides 100 mg caffeine and 350 mg polyphenols), Eleuthero root 12:1 extract (equivalent to 2000 mg eleuthero root), Korean ginseng root 5:1 extract (Panax ginseng), and Octacosanol—have been the same since at least late 2006.[1] The new formula has the same other ingredients, except silica is now listed after magnesium stearate.